Madonna & Ellen DeGeneres Sing "Dress Me Up" & There's Kissing, Twerking & Air Guitar, Too — VIDEO

There's only one way to celebrate TGIF properly this week, and that's watching Madonna and Ellen DeGeneres singing "Dress Me Up" in monogrammed bathrobes. To end Madonna week on The Ellen DeGeneres Show, the singer and host joined forces and brought back the Bathroom Concert Series. During their duet, they synchronized dance moves, serenaded each other, and had a lot of fun. "All your suits are custom-made in London," Madonna sang at Ellen, to which she seriously responded, "That's not true."

The fun really began when they started acting out some of the lyrics, like when Madonna covered Ellen in some "velvet kisses" on her hand. That led to Madonna stripping off her robe to reveal a heart-studded dress, playing some serious air guitar, twerking on Ellen, and then getting whipped in the butt by the host with the most. If that's not enough to make you want to watch, know that they end the number in oversized sunglasses and a leopard-print cowboy hat and that there is so much giggling. As Madonna explained the video on Twitter, this is the best new trend: “Who doesn’t like to sing in their bathroom? Not us 2 #unapologeticbitches." Check it out in all its glory below.

Image: The Ellen DeGeneres Show